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ELEN [110]
3 years ago
11

Raul deposited $3000 into a bank account that earned simple interest each year. After 3.5 years, he had earned $262.50 in intere

st. If no money was deposited into or withdrawn from the account, what was the annual interest rate?
Mathematics
2 answers:
Gre4nikov [31]3 years ago
7 0
I believe it's 75% but i'm not positive.
pashok25 [27]3 years ago
4 0
Te correct answer is 2.5% trust me I took the test already
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Simplify the expression. (6)8 + (6)3
Drupady [299]

Answer:

66

Step-by-step explanation:

Use the PEMDAS order. Multiplication comes before addition so it simplifies to 6(8)+(6)3

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3 years ago
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Prove tan(θ / 2) = sin θ / (1 + cos θ) for θ in quadrant 1 .
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3 years ago
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3 years ago
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10e^{2x}-5=23e^x\qquad\text{subtract}\ 23e^x\ \text{from both sides}\\\\10e^{2x}-23e^x-5=0\\\\10(e^x)^2-23(e^x)-5=0\\\\\text{substitution:}\ e^x=t > 0\\\\10t^2-23t-5=0\\\\10t^2-25t+2t-5=0\\\\5t(2t-5)+1(2t-5)=0\\\\(2t-5)(5t+1)=0\iff2t-5=0\ \vee\ 5t+1=0\\\\2t=5\ \vee\ 5t=-1\\\\t=\dfrac{5}{2} > 0\ \vee\ t=-\dfrac{1}{5} < 0\\\\\text{therefore}\ e^x=\dfrac{5}{2}\to\ln e^x=\ln\left(\dfrac{5}{2}\right)\\\\\boxed{x=\ln\left(\dfrac{5}{2}\right)}

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3 years ago
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